Kelvin, sorry for my critical demand, but from where do you take the dates “8 days with 0.3% O2 and 25°C”? Which literature or practical experience? I think, this is definitely to short for many insect pests, like the larvae of the webbing cloth moth or the furniture beetle especially inside close materials.
In December 2018 Bill Landsberger from Germany presented latest results of a Nitrogen Anoxic treatment survey with 3 weeks with 0.5% and 24°C at our IPM-conference in Munich. This dates are from a study 2018 in Berlin-Germany with many different museums insect pests. Same results came from different researchers like Selwitz and Maekawa (1998), Valentine (1991), Gilberg M (1991) etcetera Rust, Kennedy (1993) wrote 8 days with 0.1% and 25,5°C – but only for Lasioderma ser. stored in wire-cages. Most of these short time results are from early laboratory researchers and not from practical experts. See also 2-6 weeks after the recommendations of the Museum Pest Networke site: http://museumpests.net/solutions-nitrogenargon-gas-treatment/ Best Regards Stephan Von: [email protected] <[email protected]> Im Auftrag von Kelvin E. Ong (Micrographics Data) Gesendet: Dienstag, 22. Oktober 2019 16:26 An: [email protected] Betreff: RE: [pestlist] Treatment for red-legged Ham Beetle Hi Amanda, You can use Nitrogen Anoxic treatment. All lifeforms of the majority of insect species can be eradicated within eight days at oxygen concentrations of less than 0.3% at 50% RH and 25°C. For practical purpose, its recommended for a 14 days treatment, two days for establishing anoxic conditions in the enclosure, plus a safety margin of some 50% more than the experimentally proved survival time of common pests for the above mentioned 3 parameters (less than 0.3% oxygen, 50% RH and 25°C) However, at temperatures below 25°C there must be an increase in treatment time of about 50% for each 5°C decrease; that is, about twenty-two days will be required at 20°C. Hope it helps Best Rgds Kelvin [cid:[email protected]] Kelvin E. Ong Sales Director Micrographics Data Pte Ltd [cid:[email protected]] +65 64727255<tel:+65%2064727255> [cid:[email protected]] +65 97276178<tel:+65%2097276178> [cid:[email protected]] [email protected]<mailto:[email protected]> [cid:[email protected]] www.micrographicsdata.com<https://www.micrographicsdata.com/> Follow us: [Facebook]<https://www.facebook.com/MicrographicsD/> [LinkedIn]<https://www.linkedin.com/company/micrographics-data/> [Twitter]<https://twitter.com/micrographics_d> [cid:[email protected]] 115A Commonwealth Drive #02‑10 & #02‑13/16 Singapore 149596 From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> On Behalf Of Amanda Robinson Sent: Tuesday, 22 October 2019 9:52 PM To: [email protected]<mailto:[email protected]> Subject: [pestlist] Treatment for red-legged Ham Beetle I am curious if others have come across the red-legged ham beetle (Necrobia rufipes) and can share the appropriate course of treatment. At the moment, our pest management provider has recommended two courses of action: argon treatment for at least 24 hours, or freezing for at least 48 hours. Both timelines seem very short to me and I want to make sure we are eradicating this pest issue completely. The affected specimen is a bull skull with horns. The piece is in an enclosed case with dried gourds and books (a memento mori style case). We are confident the infestation is limited to this case, which is sealed, and we do intend to treat the entire contents of this case. Any advice or guidance would be most appreciated. Thank you, Amanda -- Amanda A. Robinson Museum Registrar, Collections Management M.A. Art History, Museum Studies, Florida State University Specializing in the Cataloging, Digitization, and Preservation of all Fine Art Objects (772) 321-9183 [email protected]<mailto:[email protected]> www.linkedin.com/in/amandaashleyrobinson<http://www.linkedin.com/in/amandaashleyrobinson> -- You received this message because you are subscribed to the Google Groups "Museumpests" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/pestlist/CAGcvShNs587Qzi5vAq-yuG%3DVGAO2oFcwbg7OEyGv-Ob_hPuHOg%40mail.gmail.com<https://groups.google.com/d/msgid/pestlist/CAGcvShNs587Qzi5vAq-yuG%3DVGAO2oFcwbg7OEyGv-Ob_hPuHOg%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "Museumpests" group. 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